Energy

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Energy Water efficiency

• Refrigeration and Air conditioning Systems

Darshi Dhaliwal Climate Control Bureau Low
Energy Cooling Consultants
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Energy and Water Conservation
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Typical Air Cooled condensing Unit
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Air Cooled V type condenser
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Air Conditioning

• WATER COOLED
• Packaged Units
• Packaged Chillers
• Central Plants
• District Cooling
• Industrial Cooling

• AIR COOLED
• Window units
• Split Units
• Ducted splits
• Package units
• VRF Systems

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Cooling Capacity Enhancement
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Reducing Condensing Pressure
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Lowering Energy Consumption
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Pad Type Pre Cooler

• Pad type Pre Cooler

• Pad Type Pre Cooler

• Cell Pad

• 50High water use
• Prone to clogging
• No temperature control
• No water drain provision
• High life cycle costs
• Temperatures always 3-4 C above wet bulb

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Direct Evaporative Pre Cooler
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Pre Cooler Mollier Chart
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Solution-ID pre Cooler
ID pre Cooler

• For Air cooled systems

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ID Pre Cooler-Mollier Chart
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Installation in Thailand
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ID Pre Cooler-Magic
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Case Study-Dish Hospitality

• A ready to eat food facility at Mumbai

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Dish Hospitality
Capacity TR 106.5
EER _at_ 35C BTU/Watt 8
Energy Use kW/Hr 159.8
Actual Required Capacity with Pre Cooler TR 85.2
Capacity Saved TR 21.3
Installed Capital cost INR/TR 0.20
Capital cost savings INR 4.26
ID Pre Cooler Cost INR 11.72
OPERATING COSTS
EER _at_ 35C BTU/Watt 8
Energy Use without ID pre cooler kW/Hr 159.8
Energy Use with ID pre cooler kW/Hr 127.8
Energy saving kW/Hr 31.95
Energy Cost INR/kW 6
Monthly Working Hours 720
Monthly operating cost savings INR LACs 1.38
Simple Payback Period Working Months 5.4
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350 TR TRANE Air Cooled Electric Chiller
Trane Chiller- Client confidential Trane Chiller- Client confidential Trane Chiller- Client confidential
Capacity TR 351
Input Power kW 376
ROI
Capacity Increase with ID pre cooler TR 99
Power Savings kW 81
Annual Working Hours 3000
Power Tariff INR/kW 2.5
Demand charges INR/kW/month 275
Power saving/hr INR Lacs 6.1
Energy saving due to Enhanced capacity INR Lacs 5.2
Saving in Demand kW 150.3
Demand charge savings INR Lacs /Year 0.41
Total INR 11.7
Simple payback months 28.8

• Facility Manager JLL Meghraj, Bangalore

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Reliance Energy-Kakinada AP
Reliance Energy Kakinada AP Reliance Energy Kakinada AP Reliance Energy Kakinada AP
Capacity TR 250.6
EER _at_ 35C BTU/Watt 8
Energy Use kW/Hr 375.9
Actual Required Capacity TR 175.4
Capacity Saved TR 75.18
Installed Capital cost INR/TR 0.20
Capital cost savings INR 15.04
ID Pre Cooler Cost INR 27.57
EER _at_ 35C BTU/Watt 8
Energy Use without ID pre cooler kW/Hr 375.9
Energy Use with ID pre cooler kW/Hr 263.1
Energy saving kW/Hr 112.8
Energy Cost INR/kW 4
Monthly Working Hours 720
Monthly operating cost savings INR LACs 3.248
Simple Payback Period Working Months 3.9

• P.K. Shridhar, General Manager, Reliance
  Infrastructure Limited

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Wet Cooling Towers
Water wasting systems
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Dry Cooling Towers
Energy wasting Systems
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Cooling Towers

• Wet Cooling Towers

• Dry Cooling Towers

• Wet bulb dependent
• Condensing Temp at least 10C above wet bulb.
• High fan maintenance
• Moderate System efficiency
• High water use
• High maintenance
• High Legionella spread threat

• Dry Bulb dependent
• Condensing temp 5C above Dry bulb.
• Higher fan Power
• Higher Noise levels
• Poor System Efficiency
• No water Use
• Less maintenance
• No Legionella threat

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Wet Cooling Tower for Chiller
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Closed Cycle ID cooling Tower
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5CLower Condensing Temperature
Closed Cycle ID Cooling Tower
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10Energy Savings
Closed Cycle ID Cooling Tower
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80 water savings
Closed Cycle ID Cooling Tower
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Closed Cycle ID Cooling Tower
Advantages

• Approach to Dew point
• Condensing Temperature below ARI Rating
• Lower noise
• 80 lower water use compared to wet CT
• Lowest fan power
• Lowest Noise level
• Accepts recycled water
• Lowest maintenance
• No Legionella threat

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Climate Control Bureau daman-India

• For more information
• Darshi Dhaliwal
• Principal Consultant
• dd_at_ambiator.com